DFS3596E ISC TCPIP DETECTED AN ERROR, active_process, RETCODE = rc, RSNCODE = rsn, LOSTSESS = cause, MODULE =mod_name, NODE = nodename, USER = username
Explanation
The ISC TCP/IP device dependent module (DDM) detected an error while processing a message or request associated with the ISC logical link identified in the message text.
In the message
text:
- active_process
- The ISC process that was active when the error occurred. Possible
values include:
- SENDACK
- When ISC TCP/IP encountered the error, ISC was attempting to send an ISC ACK/NACK message to a remote CICS® system by way of the parallel session identified in the message text by the nodename and username values.
- SENDMSG
- When ISC TCP/IP encountered the error, ISC was attempting to send an ISC message to a remote CICS system by way of the parallel session identified in the message text by the nodename and username values.
- SESSTERM
- When ISC TCP/IP encountered the error, ISC was attempting to notify IMS Connect and the remote CICS system that the terminal session was terminated. The session is identified in the message text by the nodename and username values.
- SESSINIT
- When ISC TCP/IP encountered the error, ISC was attempting to notify IMS Connect and the remote CICS system of the session initiation of the ISC TCP/IP parallel session identified in the message text by the nodename and username values.
- UNKNOWN
- Displayed when the error occurred during an unidentifiable ISC process. The troubleshooting and recovery procedure is the same as for the regular active process types.
- cause
- The cause of a lost session, as reported either by SCI through
the CSL SCI Notify Client exit routine or by IMS.
The possible values include:
- ICONABE
- The local IMS Connect instance terminated unexpectedly.
- ICONSTOP
- The local IMS Connect instance was shut down.
- NONE
- Neither IMS nor the CSL SCI Notify Client exit routine recorded a cause for the lost session.
- SCIABE
- The SCI instance that is managing communications between the local IMS system and the local IMS Connect instance terminated unexpectedly.
- SCISTOP
- The SCI instance that is managing communications between the local IMS system and the local IMS Connect instance was shut down.
- nodename
- The name of the affected parallel session terminal.
- mod_name
- The name of the module that detected the error.
- rc
- The return code issued by the ISC device dependent module (DDM). The ISC DDM return and reason codes that are associated with this message are documented in the following table.
- rsn
- The reason code issued by the ISC DDM. The ISC DDM return and reason codes that are associated with this message are documented in the following table.
- username
- The name of the affected user.
The return and reason codes are also listed in the TCPWORK DSECT in the LU6WA macro in the IMS.SDFSMAC data set.
| Return code | Reason code | Meaning |
|---|---|---|
| X'00000004' | X'00000004' | DFSPOOL GET storage error. (DFSCT7B0) |
| X'00000004' |
X'00000064', X'00000068', X'00000070', X'0000009C', X'000000C8', X'000000D0', X'000000D4', X'000000DC', X'000000E0', X'000000EC', X'000000F0', X'00000104' |
IMS detects an error during a session initiation. Refer to the reason codes for DFS3649A for more information. (DFSCT7B0) |
| X'00000004' | Sense code X'08640001' from IS07 IPIC request | IMS receives a sense code of DEALLOCATE_ABEND_SVC for an output message that is being sent. The output message is dequeued. (DFSCT2A0) |
| X'00000008' | Other sense code from IS07 IPIC request | IMS receives a sense code other than the DEALLOCATE_ABEND_SVC for an output message that is being sent. The output message is washed back on the message queues and the session is terminated. (DFSCT2A0) |
| X'00000008' | X'00000000' | An error occurs when IMS attempts to send a response for an input message that is being received. The session is terminated. (DFSCT3B0) |
| X'0000000C' | X'00000004' | DFSPOOL GET storage error. (DFSCT7F0) |
| X'00000014' | X'00000004' | DFSPOOL GET storage error. (DFSCT7C0) |
| X'00000216' | X'00000000' | IMS detects a security specification in the IS02 CAPEX response message from CICS. (DFSCT7B0) |
| X'0000xxyy' Where:
|
X'00000000' | IMS detects non-zeroed values of response and reason in the IS02 CAPEX response message from CICS. (DFSCT7B0) |
System action
The parallel session is terminated. IMS processing continues.System programmer response
Determine the cause of the error from the RETCODE, RSNCODE, and LOSTSESS values. The module identified in the message text is where the error occurred. Check for other messages from SCI, IMS Connect, or TCP/IP to help with the diagnosis. Collect the X'6701' error records from the IMS log.
After the cause of the error is corrected, restart the link.